19-4050; Rev 1; 3/09
MAX16046 Evaluation Kit
General Description
The MAX16046 evaluation kit (EV kit) provides a proven
printed-circuit board (PCB) layout that facilitates evalua-
tion of the MAX16046 EEPROM-based sequencer/moni-
tor/marginer with nonvolatile fault memory. This EV kit is
a fully assembled and tested surface-mount board.
The EV kit includes an on-board USB-to-JTAG and I
2
C
interface facilitating communications between the host
PC and the MAX16046. Two LDO regulators and two
tracking FETs make it easy to evaluate the sequencing,
monitoring, and margining functionality of the
MAX16046. External connections are also provided to
facilitate connection to an external application circuit.
This EV kit data sheet assumes basic familiarity with the
MAX16046. Refer to the MAX16046/MAX16048 data
sheet for more detailed information.
♦
USB Interface to Host PC
♦
Easy-to-Use GUI Software
♦
On-Board LDO Regulators and Tracking FETs
♦
Convenient Test Points and Headers for Easy
Evaluation
Features
Evaluates: MAX16046
Ordering Information
PART
TYPE
MAX16046EVKIT+
EV Kit
+Denotes
lead(Pb)-free and RoHS compliant.
Contents List
QTY
1
1
DESCRIPTION
Circuit board assembly: MAX16046EVKIT+
USB high-speed A-to-B cable, 5ft (1.5m)
Component List
DESIGNATION
QTY
DESCRIPTION
10μF ±10%, 16V tantalum
capacitors
AVX TAJA106K016R
KEMET T494A106K010AS
4.7μF ±20%, 16V X5R ceramic
capacitor (1206)
TDK C3216X5R1C475M
Taiyo Yuden EMK316BJ475ML
1.0μF ±10%, 10V X5R ceramic
capacitors (0805)
TDK C2012X5R1A105K
KEMET C0805C105K4PAC
4.7μF ±20%, 6.3V X5R ceramic
capacitors (0805)
TDK C2012X5R0J475M
Taiyo Yuden JMK212BJ475MG
10μF ±20%, 16V X5R ceramic
capacitor (1206)
TDK C3216X5R1C106M
Taiyo Yuden EMK316BJ106KL
0.1μF ±10%, 25V X7R ceramic
capacitors (0603)
TDK C1608X7R1E104K
Taiyo Yuden TMK107BJ104KA
18pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H180J
Taiyo Yuden UMK107CG180JZ
DESIGNATION
QTY
DESCRIPTION
0.01μF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H103K
Taiyo Yuden UMK107B103KZ
2.2μF ±20%, 10V X5R ceramic
capacitors (0805)
TDK C2012X5R1A225M
Taiyo Yuden LMK212BJ225MG
33pF ±50V, C0G ceramic
capacitor (0603)
TDK C1608C0G1H330J
Taiyo Yuden UMK107CG330JZ
Test point, red
500mA fast-acting fuse (2405)
Test points, black
8-pin header
3-pin headers
2-pin headers
2 x 3-pin header
Green LEDs (1206)
5-pin header
2 x 5-pin header
3-pin headers
9-pin headers
C1, C2
2
C111
1
C3
1
C112, C113
2
C4, C6, C8,
C10, C100,
C108
6
C114
1
EXT PWR
F100
GND
J1
J2, J3, J4, J7, J8
J5, J6
J100
LED1–LED7,
LED100–LED103
P1
P2
P3, P4, P9, P10
P5, P7
1
1
3
1
5
2
1
11
1
1
4
2
C5, C9, C110
3
C7
1
C101, C102,
C103
3
C104–C107
4
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX16046 Evaluation Kit
Evaluates: MAX16046
Component List (continued)
DESIGNATION
P6
P8
P100
P101, P102
Q1, Q2
R1, R3
R2
R4, R5, R19, R28
R6, R8, R9
R7
R10, R12, R13,
R14
R11
R15, R17, R21,
R24, R27, R29,
R30,
R100–R103
R16, R18, R20,
R22, R23, R25,
R26, R104
R105, R106
R108, R109,
R110
R112
QTY
1
1
1
0
2
2
1
4
3
1
0
1
DESCRIPTION
10-pin header
11-pin header
USB_B right-angle connector
Not installed
n-channel MOSFETs
Fairchild FDC5612
84.5kΩ ±1% resistors (0805)
133kΩ ±1% resistor (0805)
475Ω ±1% resistors (0805)
78.7kΩ ±1% resistors (0805)
66.5kΩ ±1% resistor (0805)
Not installed, resistors (0805)
16.9kΩ ±1% resistor (0805)
U102
1
1
0
1
9
1
U101
1
U100
1
U1, U2
2
DESIGNATION
S1–S4
S5
S6, S7
QTY
4
1
2
DESCRIPTION
8-row DIP switches
SPDT slide switch
SPST pushbutton switches
Low-dropout linear regulators
(8 SO)
Maxim MAX1658ESA+
EEPROM-programmable system
manager (56 TQFN-EP*)
Maxim MAX16046ETN+
Dual, low-noise, low-dropout linear
regulator (6 SOT23)
Maxim MAX8882EUTAQ+
USB peripheral controller
(32 LQFP)
Maxim MAX3420EECJ+
Microcontroller (68 QFN-EP*)
Maxim MAXQ2000-RAX+
12MHz crystal (HCM49)
Citizen HCM49-12.000MABJ-UT
Not installed, 32kHz crystal
20MHz crystal (HCM49)
Citizen HCM49-20.000MABJ-UT
Shunts
PCB: MAX16046 Evaluation Kit+
U3
1
11
221Ω ±1% resistors (0805)
Y100
Y101
8
2
3
0
10kΩ ±1% resistors (0805)
33.2Ω ±1% resistors (0805)
4.75kΩ ±1% resistors (0805)
Not installed, resistor (0805)
Y102
—
—
*EP
= Exposed pad.
Quick Start
Component Suppliers
SUPPLIER
Diodes, Inc.
Fairchild
Semiconductor
KEMET Corp.
Taiyo Yuden
TDK Corp
PHONE
805-446-4800
888-522-5372
864-963-6300
800-348-2496
847-390-4373
WEBSITE
www.diodes.com
www.fairchildsemi.com
www.kemet.com
www.t-yuden.com
www.component.tdk.com
Required Equipment
You need the following equipment to start using the
MAX16046 EV kit:
•
Maxim MAX16046 EV kit
•
A PC with a spare USB port
Note:
In the following sections, software-related items
are identified by bolding. Text in
bold
refers to items
directly from the EV kit software. Text in
bold and
underlined
refers to items from the Windows
®
operat-
ing system.
Windows is a registered trademark of Microsoft Corp.
Note:
Indicate you are using the MAX16046 when contacting
these component suppliers.
2
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MAX16046 Evaluation Kit
Procedure
1) Ensure jumper J1 is set to LOW. Also ensure that
jumpers J2, J3, and J4 are set to the 1-2 position, J5
and J6 are closed, J7 and J8 are in the 2-3 position,
and J100 is in the 3.3V position. All switches in switch
banks S1, S2, and S3 should be in the ON position.
2) Connect the MAX16046 EV kit to a PC using the
provided USB cable. LED100 will light, indicating
that the EV kit has power.
3) Install the MAX16046 EV kit software.
4) Launch MAX16046.exe.
5) Select
I2C
in the
Connect
dialog, and make sure
Address
is 0xA0. Click
OK.
6) From the
File
menu, select
Open Configuration.
7) Select the MAX16046 EV Kit Demo.xml file and click
OK.
This action loads the
Setup
tab with a configu-
ration that matches the power supplies on the
MAX16046 EV kit, as well as the register contents
for the MAX16046.
8) Click the
Data Logging
tab. Move the enable
switch, S5, to the ON position and note the moni-
tored voltages.
Evaluates: MAX16046
Detailed Description of Software
The MAX16046 EV kit software serves two purposes.
One is to facilitate evaluation of the MAX16046 on the
EV kit hardware. The other is to provide a convenient
way to configure a MAX16046–MAX16049 in an appli-
cation circuit.
Connecting to the MAX16046 EV Kit
Make sure the EV kit is connected to the PC by the USB
cable. Launch the software, and in the
Connect
dialog,
select
I2C
or
JTAG
and click
OK.
If the software is
being used without the EV kit connected, select
Demo.
The I
2
C slave address may be specified. The default is
0xA0, but other values (depending on the settings of
jumper J1; see Table 5) may be used.
Setup Tab
The
Setup
tab, shown in Figure 2, contains information
about the power supplies connected to and monitored
by the MAX16046. Each list item represents a power
supply that is being controlled and monitored by the
MAX16046. List items may have subitems, which are
additional power-supply outputs that also require moni-
toring. For example, a dual-output DC-DC converter can
have one subitem to monitor the extra DC-DC output.
The contents of the
Setup
tab should match the
schematic of the application circuit. In the case of the
EV kit, the contents of the
Setup
tab should match the
power supplies provided with the EV kit. Figure 2 shows
the configuration for the four EV kit power supplies.
Figure 1. Connect Dialog
Table 1 describes the purpose of each column in the
Setup
tab.
Figure 2. Setup Tab
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3
MAX16046 Evaluation Kit
Evaluates: MAX16046
Table 1. Setup Tab Column Descriptions
COLUMN NAME
Name
EN_OUT
DESCRIPTION
The name of the power supply. This field is provided as a convenience and is not saved in the
registers of the MAX16046, but it is stored in the configuration file.
The selected EN_OUT enable output pin for the power supply. Choose the EN_OUT that is wired to
the EN input of the power supply on the schematic.
The output configuration for the selected EN_OUT. Choices range from push-pull/open-drain and
active-high/active-low for logic-level outputs, and also charge pump and closed-loop tracking.
Closed-loop tracking is for external n-channel MOSFETs and requires an additional GPIO to be
configured as an INS_ sense line. See the
On-Board Tracking MOSFETs
section for more information.
The monitoring input for this power supply. Choose the MON input that is wired to the power-
supply output on the schematic. If more than one monitoring input is necessary for the power
supply (such as for a multiple output supply), add a subitem by clicking
Add Subitem.
The input voltage range for the selected monitoring input. Choose a voltage range that
encompasses the voltage to be monitored.
Primary overvoltage and primary undervoltage monitoring thresholds. Choose the monitoring
thresholds appropriate for this power supply. If a voltage is specified in the
Nom. Volt
field,
clicking on the
POV
or
PUV
column header will display the thresholds as a percent over or percent
under the nominal power-supply output voltage.
Early warning monitoring threshold. This threshold can be an overvoltage or an undervoltage
depending on the
Early Warning
checkbox at the top of the
Setup
tab.
Fault-enable checkboxes. Placing a checkmark in one of these fields allows the associated fault
condition to trigger an EEPROM fault log and turn off all the EN_OUTs.
The margining DAC output for this power supply. If the power supply is wired for margining, select
the DACOUT output that is connected through a resistor to the trim or feedback connection of the
power supply on the schematic. If more than one DAC output is necessary for the power supply
(such as for a multiple-output supply), add a subitem by clicking
Add Subitem.
Click the icon in the appropriate row to display the
Margining Calculator
dialog; additional
margining DAC parameters are entered through this dialog, including the values of the feedback
resistor, reference voltage, and several others.
Output voltages of the power supply during a margin up or margin down condition. Enter a value in
each field to specify the voltage desired for each margin limit. Click the column headers to display
the margin up and margin down values as a percentage of the nominal power-supply voltage
(specified in the
Nom. Volt
column). Populate these fields initially using the margining calculator;
afterwards, they can be edited directly.
Nominal power-supply output voltage. If the DACOUT is specified as N/A for this power supply,
this value must be manually entered. If a DACOUT is specified, use the
Margining Calculator
dialog to modify this value. This value is provided to help with certain margining calculations as
well as the percentage calculation for the voltage monitoring thresholds; it is not saved in the
registers of the MAX16046 but it is stored in the configuration file.
Output Type
MON
MON Range
POV
PUV
EW
POV Fault
PUV Fault
EW Fault
DACOUT
Marg Up
Marg Dn
Nom. Volt
4
_______________________________________________________________________________________
MAX16046 Evaluation Kit
Evaluates: MAX16046
Figure 3. Margining Calculator
To add a power supply to the list, click
Add Item.
To
add an additional monitoring input or margining DAC
output to a power supply, as in the case of a multiple-
output power supply, select the row representing the
power supply and click
Add Subitem.
To remove a
power supply or additional monitoring input/margining
DAC output, select the row to be removed and click
Delete Item.
To remove all the power supplies, click
Clear Tree.
The early warning thresholds (EW) can be configured
as overvoltage thresholds or undervoltage thresholds.
Click
Undervoltage
or
Overvoltage
as desired.
The contents of the
Setup
tab are not sent to the regis-
ters of the MAX16046 until the
Write To Registers
but-
ton is clicked. After making a change, click
Write To
Registers
to update the device registers.
Margining Calculator
To facilitate resistor value calculation for designs using
the margining DACs, the EV kit software provides a
margining calculator. Access the margining calculator
by clicking the
icon for the desired DACOUT chan-
nel in the
Setup
tab.
Figure 3 shows the
Margining Calculator
dialog. This
provides a convenient interface to the margining calcu-
lations listed in the
Applications Information
section of
the MAX16046 data sheet.
To use the margining calculator, select the desired for-
mulas using the
Connection Style
option buttons. The
diagram on the left will update to reflect the wiring for
that particular style. Enter the reference voltage used
by the power supply under
Reference Voltage (Vref),
and select the
DAC Range
so the reference voltage is
approximately in the middle of the range. For the feed-
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5
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